Have already checked for oil leakages in the following areas a> under car b> valve cover, c> head gasket, d>turbo. There is no visible leak anywhere. Have even opened the head to inspect the block for worn out rings. All OK compression is 220.(the block is stock)

I now intend to do up the same to run higher boost and have planned the following

wow... that oil has to travel uphill over half of the engine, then wrap around and go back into the valve cover (i'm assuming?) well that's your problem there. you need the drainback to be downhill, with a fitting drilled/welded into your oilpan. that oil is backing up in that return line and the turbo is cooking it. and the diameter is likely a little small too. but that's the least of your worries.

Yeah, your oil eventually leaves the turbo, but that needs to be fixed asap.Like everyone else said the oil should flow down into the oil pan, unless you want to stick an electric oil pump in the copper line. I don't even know where you could get something like that.

Sorry for not updating the thread. Had made a mistake the copper coloured line(now replaced) was actually the feed line. Have also finished the upgrade as listed in the opening post and with the new build my problem seems to be solved. The car is now putting out 230 WHP @12psi tuned for daily driving on 87 Octane fuel.

At present Oil Temps are between 180-190*F and go upto 210-220*F under boost over prolonged durations. Can installing a radiator from a Auto Transmission which has a oil cooling line reduce the oil temperatures or do I need to go in for a oil cooler only. My mech said that excahanging the radiators should help.

At present Oil Temps are between 180-190*F and go upto 210-220*F under boost over prolonged durations. Can installing a radiator from a Auto Transmission which has a oil cooling line reduce the oil temperatures or do I need to go in for a oil cooler only. My mech said that excahanging the radiators should help.

Jignesh

Click to expand...

There is nothing wrong with those oil temps. So I would suggest not doing any oil coolers or anything like that.